The great inventions : their history, from the earliest period to the present. Their influence on civilization, accompanied by sketches of lives of the principal inventors; their labors, their hardships and their triumphs (1883)
Wilkie, Franc B. (Franc Bangs), 1832-1892 · Philadelphia and Chicago, J. A. Ruth & co. · leaf 534
niellscell has several modifications which it is unnecessary toparticularize. In addition there are the Grove, theBunsen, the Leclanche, the gravity, and many others.In all these the effect produced is from the action ofchemical fluids on materials such as copper, zinc, plati-num and iron. There is… … 530 ELECTEICITY AND ITS APPLIANCES. The magneto-electric machines have of late assumeda great prominence, the more so as there is a growingdemand for the electric light, which cannot he furnishedfrom battery power, owing to its costliness. Zinc is far more expensive than coal; hence thenecessity of…
Inventions · Inventors
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